Please help!!!!! I only have 5 minutes!!!!!!!!!

Answer:

I think B

Explanation:

I dunno I guessed Dont use this

Answer:

D

Explanation:

Refraction is generally defined as the change in the direction of a wave as it travels from one medium to another. Light is a form of wave and light refraction is caused by a change in the speed of light as it moves from air to water, causing the light to bend in the process. The medium of travelling has to be transparent.

The change in the speed and direction is due to the variability in the refractive index of media. Light travels faster as it moves from a medium of higher refractive index to a medium of lower refractive index and vice versa.

The correct option is D.

Answer:

c.

Explanation:

Answer:

[tex]\rho _{population}=4\frac{people}{mi^2}[/tex]

Explanation:

Hello.

In this case, since the population density is computed by dividing the amount of people by the space (area) where they are in:

[tex]\rho _{population}=\frac{people}{area}[/tex]

For 200 people living in a 50-mi² area, the population density is:

[tex]\rho _{population}=\frac{200people}{50mi^2}\\\\\rho _{population}=4\frac{people}{mi^2}[/tex]

It means that 4 people live per square mile area.

Best regards.

Answer:

Cellular respiration is a key role in returning the muscles to normal after exercise, converting the excess pyruvate into ATP and regenerating the stores of ATP, phosphocreatine, and glycogen in the muscle that are required for more rapid contractions.

Hope that helps!

Answer:

Mantle is the answer

Explanation:

The Earth can be divided into four main layers: the solid crust on the outside, the mantle, the outer core and the inner core. Out of them, the mantle is the thickest layer, while the crust is the thinnest layer.

I am taking the same class rn!!! whos your teacher??

Answer:

b-MANTLE

Explanation:

The mantle is the mostly-solid bulk of Earth's interior. The mantle is about 2,900 kilometers (1,802 miles) thick, and makes up a whopping 84% of Earth's total volume.

Answer:

would increase

Explanation:

The pyramid of biomass is a diagram that exhibits the total biomass of the organisms at different trophic levels, which are required to support life in a given ecosystem. This pyramid usually starts with producers situated on the bottom (e.g., plants), then continues with the organisms that eat these primary consumers (herbivores), after with secondary consumers (carnivores), and so successively. The pyramid of biomass indicates the amount of mass of 1-primary producers required to support the life of the primary consumers, 2- primary consumers needed to support the life of the secondary consumers, 3-secondary consumers needed to support the life of the tertiary consumers, and so successively for each trophic level. In this diagram, the trophic level with a higher amount of biomass (and energy) is usually represented by the producers (i.e., by organisms on the bottom), and this amount of biomass decreases as long as more levels are considered. In consequence, if more food from secondary consumers is consumed, it will produce an increase in the percentage of biomass that is needed to support life.

Answer:

phosphate and deoxyribose

Explanation:

Answer:

Phosphates and sugars

Explanation:

Answer:

See below

Explanation:

The people in England felt that it was acceptable to make to colonists pay taxes because they felt that they still owned the colonists and could push them around as they wished. They also needed the money to pay for war debt. It was also a reaction to the protests that the Americans were performing.

Answer:

A coin represents a diploid, heterozygous cell with its heads and tails sides. The act of tossing the coin to land on heads or tails, provides an apt representation of the segregation of alleles during meiosis in the formation of gametes.

or i guess you could just say its all by chance ;P

peace :)

Answer:

It is very similar to the way traits are inherited in nature, as both combinations occur by chance. Though, in the coin toss, there are only 2 possible alleles whereas in nature there may be more complicated combinations of alleles for traits.

Explanation:

Answer: C. Chlorofluoro Carbons.

Answer:

there is no choices

Explanation:

what

Answer:

In the melting of icebergs, icebergs could potentially contain long-dormant bacteria and viruses. Those viruses trapped in ice and permafrost for centuries, can be reactivated. That means melting those ice could potentially open a Pandora's box of diseases.  Including some that have caused global epidemics in the distant past.

Example: babesiosis

As of regular ice. The freezing of bacteria in water isn't just an old practice and ice from unclean sources could also contain disease, when melted and ingested or touched this ice as well could transmit disease not so long-dormant, however still unpleasant.

Example: AIDS

Answer:

Dispersion of white light by a prism

Explanation:

When white light is passed through a prism, the white light separates into its component wavelengths which are:

Red

Orange

Yellow

Green

Blue

Indigo

Violet

Together, all of these wavelengths constitute the spectrum of white light.

Hence, the dispersion of white light shows that each color of visible light has a specific wavelength.

Answer:

1. A clock with internal mechanical parts comprises a system because it is a combination of various parts that a heterogeneous in nature and function working together to achieve one end - indicating the time accurately.

Some mechanical clocks comprise of at least 10 parts namely:

2. A clock is a non-living system.

Living systems have certain characteristics. Some of them are:

3. A cannot support a living system. It can however help a human being (which is essentially a combination of various systems) to tell the time.

4. a system is a combination of heterogeneous parts that work in unison to form a whole complex entity that can perform one or more functions.

Cheers

Complete question:

Fish are sensitive to many environmental variables: dissolved oxygen, light, temperature, pH, clarity of the water, food supply, presence of predators, etc. Fish will be attracted to different locations in a lake, based on its mix of variables.

Imagine you want to conduct an experiment to understand how just one of these variables differs in a local lake, depending on its depth. This lake reaches a depth of 17 meters. For this activity:

Pick a variable that might change as you go deeper in the lake on a given day.

Do a little research on that variable to determine how you might measure it in a lake.

Use the template below to outline an experiment to investigate this variable in the lake by depth. For each part, simply answer the question in parentheses to create your outline.

Type your response to each field in the space below that field:

Title: (Enter a brief, descriptive title. Hint: Sometimes it’s best to do this last.)

Purpose: (Why are you doing this experiment?)

Hypothesis: (What do you predict from this experiment and why?)

Procedure/Method: (How will you specifically carry out your experiment to test your prediction?)

Observations: (What specifically would you look for and record?)

Data analysis: (With this kind of data, what would be the best way to present it?)

Conclusion: [No need to enter anything here for now.]

References: (List any references you used to design the experiment. Note that for a full experiment write-up you’d also list any references you used while carrying out the experiment or in analyzing your results.)

Answer and Explanation:

Variable: dissolved oxygen

Title: Oxygen variation as a water quality indicator.

Purpose: To study how dissolved oxygen varies with depth

Hypothesis: The percentage of dissolved oxygen will decrease as depth increases.

Procedure/Method:

Observations:  

%DO in each site and depth will be recorded in order to analyze how it varies with depth.  

Data analysis:

According to different indicators of water quality in a lake, the observed %DO will be compared and analyzed to evaluate the sanity state of the lake water. Example of valuation scale,  

NORMAL index: Oxygen concentration in the water column is found to be sufficient for the  fish survival

REGULAR: Decrease in oxygen concentration at greater depth, values  below saturation in the background

CRITICAL: Null oxygen concentration in all or part of the column profile of  water. Probable fish mortality events.

According to the taken data, observations on the study site will be taken, such as the variation in oxygen concentration as it gets deeper, until reaching hypoxia level, where fishes can not survive. Data can be presented in tables and in graphs, in both cases comparing sampling sites and depth, making a focus on the valuation scale.

Conclusion:

Association of the oxygen variation with the sanity state of the lake, microbiology decomposition processes at different depths, eutrophication state, among others.  

References:  

- Quality monitoring in San Roque waters. INA-CIRSA. 02/26/2013

- Quality Monitoring Program of Water from Los Molinos Reservoir. Articulation and Institutional Synergy for the Water Resources Preservation. Cossavella A, Bazan R. 2018

- Limnology course. Córdoba National University, UNC, 2018

Answer:

In the clarification section elsewhere here, the definition of the concern is mentioned.

Explanation:

Answer:

Plants get the carbon from the air that humans exhale. They breath it in and use it for photosynthesis.

Explanation:

Took biology last year.

During photosynthesis, what is the source of the carbon is the sugar that is created is carbon dioxide in the air.

Stages of photosynthesis:

(i) Absorption of light energy by chlorophyll.

(ii) Conversion of light energy to chemical energy and splitting of water molecules into hydrogen and oxygen.

(iii) Reduction of carbon dioxide to carbohydrates.

Learn more:

brainly.com/question/9498584

Answer:

Restriction endonucleases cleave at  DNA (Deoxy ribonucleic acid) which are sequences that read the same, 5 to 3 , on each DNA strand.

Explanation:

RESTRICTION ENDONUCLEASES-: An enzyme that cleaves DNA into fragments at or near unique recognition sites within molecules known as restriction sites is a restriction enzyme, constraint endonuclease, or restrictase. One class of the larger endonuclease group of enzymes is restriction enzymes. Restriction enzymes are typically divided into five groups, which vary in structure and whether their DNA substrate is cut at their location of recognition or whether the locations of recognition and cleavage are different from one another. Both restriction enzymes make two incisions in order to cut DNA, once through each sugar-phosphate backbone (i.e. each strand) of the double helix DNA.

In bacteria and archaea, these enzymes are contained and provide a defence mechanism against invading viruses. Within a prokaryote, in a process called restriction digestion, the restriction enzymes selectively cut up foreign DNA; meanwhile, host DNA is protected by a modification enzyme (a methyltransferase) that modifies the prokaryotic DNA and blocks cleavage. Together, these two procedures form the method of restriction alteration.

The Sahara desert food chain begins with the plants. There are many kinds of plants in the desert. They are the Date Palms, Cacti, Thorn Acacia, Creosote Bush, Sage Brush, Desert Milkweed, Desert Willow, and Desert Tobacco. The plants are producers as they are the source of food for many herbivores.

Answer:  

-help to store water in the soil (by increasing infiltration) rather than evaporating (enabling the plants survive long periods of drought)

-mix inorganic and organic compounds in the soil (and thus it can better resist the process of erosion)

-termite’s feces help to prevent erosion  

Explanation:

Decomposers break down complex organic matter into basic compounds containing nitrogen, phosphorus, and calcium, generating water (H2O) and carbon dioxide (CO2) during this process. Termites are critical in an ecosystem because they are decomposers, i.e., they are recyclers that break down organic material into nutrient-rich soil. For example, termites digest the cellulose from dead plants (due to the presence of specific bacteria in their digestive tract), thus allowing the carbon cycle.

Answer:

From an area of higher concentration to an area of lower concentration.

Explanation:

The molecules of CO2 are moving from an area of higher concentration to an area of lower concentration. Carbondioxide is produced as waste product in the cell during the process of respiration. This carbondioxide gas is loaded in blood cells because in the cell, concentration of carbondioxide gas is higher while on the other hand the concentration of carbondioxide is lower in the blood cells. This carbondioxide gas exchange in the lungs with oxygen which is required in the process of respiration for the production of energy in the form of ATP molecules. So from the conclusion we can say that CO2 moves from an area of higher concentration to lower concentration.

Answer:The only difference between a molecule of a compound and a molecule of an element is that in a molecule of an element, all the atoms are the same. For example, in a molecule of water (a compound), there is one oxygen atom and two hydrogen atoms. But in a molecule of oxygen (an element), both of the atoms are oxygen.

Explanation:hope this helps

Answer:

ok

Explanation:

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Reduce: simply means lessen the use of unnecessary materials.

Waste management can be defined as the processes, schemes, activities and actions that are typically required to collect, treat and manage (handle) a waste material from its creation to its final disposal.

Basically, some importance of waste management are:

I. It makes planet Earth free from garbage or waste materials.

II. It promotes a clean, beautiful and healthful environment.

III. It helps to transform garbage or waste materials into something useful through recycling.

The 5Rs of waste management generally refers to an efficient, effective and modern way of managing garbage and waste material, these include:

Reduce is a waste management technique which involves lessening the use of unnecessary materials in the performance of a task.

For example, biodegradable materials can be burned to lessen waste.

Read more: https://brainly.com/question/18769370

Answer:  The correct answer is "creating a bower (arch) with interesting objects and defending it from rival mates".

Explanation:

Just took the quiz.

creating a bower (arch) with interesting objects and defending it from rival males is a territorial behavior.

Any defended area is referred to as a "territory," and most birds are territorial (in the sense that they defend some area, even if it's merely a nest site), at least for a portion of the year.

When a territory is defended, the "owner" has access to one or more resources (or access to resources of higher quality) than they otherwise would. According to what resource (or resources) is (are) being protected, territories can be categorized.

Type A territory, or the area where mating, nesting, and feeding take place (such as courtship, mating, nesting, & foraging).

Therefore, creating a bower (arch) with interesting objects and defending it from rival males is a territorial behavior.

To learn more about territory, refer to the link:

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Answer:

considered a vegetable.

Explanation:

Answer:

our life experience changes our brain so if u fall off a bike ur brain will train u and send signals to ur body ur brain also knows when its forgetting something but doesn't know what its forgetting

Explanation: